<!DOCTYPE html>
<!-- xlsx.js (C) 2013-present  SheetJS http://sheetjs.com -->
<!-- vim: set ts=2: -->
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>SheetJS + x-spreadsheet Live Demo</title>
<style>
#drop{
	border:2px dashed #bbb;
	-moz-border-radius:5px;
	-webkit-border-radius:5px;
	border-radius:5px;
	padding:25px;
	text-align:center;
	font:20pt bold,"Vollkorn";color:#bbb
}
#b64data{
	width:100%;
}
a { text-decoration: none }
</style>
<!-- x-spreadsheet stylesheet -->
<link rel="stylesheet" href="https://unpkg.com/x-data-spreadsheet/dist/xspreadsheet.css"/>
</head>
<body>
<pre>
<b><a href="http://sheetjs.com">SheetJS Data Preview Live Demo</a></b>

<a href="https://github.com/myliang/x-spreadsheet">x-spreadsheet component library</a>

<a href="https://github.com/SheetJS/sheetjs">Source Code Repo</a>
<a href="https://github.com/SheetJS/sheetjs/issues">Issues?  Something look weird?  Click here and report an issue</a>

<div id="drop">Drop a spreadsheet file here to see sheet data</div>
<input type="file" name="xlfile" id="xlf" /> ... or click here to select a file
<textarea id="b64data">... or paste a base64-encoding here</textarea>
<b>Advanced Demo Options:</b>
Use readAsBinaryString: (when available) <input type="checkbox" name="userabs" checked>
</pre>
<p><input type="submit" value="Export to XLSX!" id="xport" onclick="export_xlsx();" disabled="true"></p>
<div id="htmlout"></div>
<br />
<script src="https://unpkg.com/x-data-spreadsheet/dist/xspreadsheet.js"></script>
<script src="shim.js"></script>
<script src="xlsx.full.min.js"></script>
<script>
/*jshint browser:true */
/* eslint-env browser */
/* eslint no-use-before-define:0 */
/*global Uint8Array, Uint16Array, ArrayBuffer */
/*global XLSX */

var HTMLOUT = document.getElementById('htmlout');
var xspr = x.spreadsheet(HTMLOUT);
HTMLOUT.style.height = (window.innerHeight - 400) + "px";
HTMLOUT.style.width = (window.innerWidth - 50) + "px";

function stox(wb) {
	var out = [];
	wb.SheetNames.forEach(function(name) {
		var o = {name:name, rows:{}};
		var ws = wb.Sheets[name];
		var aoa = XLSX.utils.sheet_to_json(ws, {raw: false, header:1});
		aoa.forEach(function(r, i) {
			var cells = {};
			r.forEach(function(c, j) { cells[j] = ({ text: c }); });
			o.rows[i] = { cells: cells };
		})
		out.push(o);
	});
	return out;
}

function xtos(sdata) {
	var out = XLSX.utils.book_new();
	sdata.forEach(function(xws) {
		var aoa = [[]];
		var rowobj = xws.rows;
		for(var ri = 0; ri < rowobj.len; ++ri) {
			var row = rowobj[ri];
			if(!row) continue;
			aoa[ri] = [];
			Object.keys(row.cells).forEach(function(k) {
				var idx = +k;
				if(isNaN(idx)) return;
				aoa[ri][idx] = row.cells[k].text;
			});
		}
		var ws = XLSX.utils.aoa_to_sheet(aoa);
		XLSX.utils.book_append_sheet(out, ws, xws.name);
	});
	return out;
}

var process_wb = (function() {
	var XPORT = document.getElementById('xport');

	return function process_wb(wb) {
		/* convert to x-spreadsheet form */
		var data = stox(wb);

		/* update x-spreadsheet */
		xspr.loadData(data);
		XPORT.disabled = false;

		if(typeof console !== 'undefined') console.log("output", new Date());
	};
})();

var do_file = (function() {
	var rABS = typeof FileReader !== "undefined" && (FileReader.prototype||{}).readAsBinaryString;
	var domrabs = document.getElementsByName("userabs")[0];
	if(!rABS) domrabs.disabled = !(domrabs.checked = false);

	return function do_file(files) {
		rABS = domrabs.checked;
		var f = files[0];
		var reader = new FileReader();
		reader.onload = function(e) {
			if(typeof console !== 'undefined') console.log("onload", new Date(), rABS);
			var data = e.target.result;
			if(!rABS) data = new Uint8Array(data);
			process_wb(XLSX.read(data, {type: rABS ? 'binary' : 'array'}));
		};
		if(rABS) reader.readAsBinaryString(f);
		else reader.readAsArrayBuffer(f);
	};
})();

(function() {
	var drop = document.getElementById('drop');
	if(!drop.addEventListener) return;

	function handleDrop(e) {
		e.stopPropagation();
		e.preventDefault();
		do_file(e.dataTransfer.files);
	}

	function handleDragover(e) {
		e.stopPropagation();
		e.preventDefault();
		e.dataTransfer.dropEffect = 'copy';
	}

	drop.addEventListener('dragenter', handleDragover, false);
	drop.addEventListener('dragover', handleDragover, false);
	drop.addEventListener('drop', handleDrop, false);
})();

(function() {
	var xlf = document.getElementById('xlf');
	if(!xlf.addEventListener) return;
	function handleFile(e) { do_file(e.target.files); }
	xlf.addEventListener('change', handleFile, false);
})();

function export_xlsx() {
	var new_wb = xtos(xspr.getData());

	/* write file and trigger a download */
	XLSX.writeFile(new_wb, 'sheetjs.xlsx', {});
}
</script>
<script type="text/javascript">
/* eslint no-use-before-define:0 */
	var _gaq = _gaq || [];
	_gaq.push(['_setAccount', 'UA-36810333-1']);
	_gaq.push(['_trackPageview']);

	(function() {
		var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
		ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
		var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
	})();
</script>
</body>
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